Stator finish turning tool of high-speed and high-precision spindle motor

Abstract

The utility model relates to the technical field of motor stator processing, in particular to a stator finish turning tool of a high-speed high-precision spindle motor, which comprises an expansion sleeve, a base and a fastening component, and the expansion sleeve is mounted on the base through the fastening component; the base comprises a mounting disc and a conical shaft seat, and the mounting disc is fixedly connected with the conical shaft seat; the middle of one side of the mounting disc protrudes, a mounting hole is formed in the center of the mounting disc, a plurality of connecting through holes are formed in the mounting hole in the circumferential direction, and a plurality of butt joint through holes are formed in the outer side of the other side of the mounting disc in the circumferential direction; a mounting hole corresponding to the mounting disc is also formed in the middle of one end of the conical shaft seat, a butt-joint threaded through hole is formed in the mounting hole of the conical shaft seat, and a counter bore is formed in the butt-joint threaded hole in the middle of the other end of the conical shaft seat. The utility model provides a stator finish turning tool for a high-speed and high-precision spindle motor, which can solve the technical problem that the overall mass of a base is larger due to the fact that the base for installing an expansion sleeve in the prior art is designed to be solid, so that the overall installation of the tool is more difficult.

Description

Technical Field

[0001] The utility model relates to the technical field of motor stator processing, in particular to a stator finishing tool for a high-speed and high-precision spindle motor. Background Art

[0002] In modern manufacturing, high-speed and high-precision spindle motors are key components that are widely used in precision machining, mold manufacturing, semiconductor equipment, aerospace, etc. The performance of these motors directly affects the machining accuracy and production efficiency. Among them, the stator is an important component of the motor, and its manufacturing process is particularly critical.

[0003] In the existing motor stator processing process, the stator is generally installed directly on the core shaft and fixed with an expansion sleeve. For example, the authorization announcement number: CN209407464U discloses a track roller finishing tool, including an expansion sleeve, a gasket and a bolt, and a seat body, the seat body has a conical outer surface, the expansion sleeve has a conical inner surface, the bolt and the gasket can cooperate to expand the expansion sleeve mounted on the conical outer surface of the workpiece, so that the expansion sleeve can expand and fix the track roller mounted on the expansion sleeve.

[0004] However, the prior art still has the following technical problems: the base for installing the account set in the prior art is solidly designed, which makes the overall weight of the base large, thus causing the whole tooling to be

[0005] The installation of the body is more difficult. Utility Model Content

[0006] The utility model provides a stator finishing tool for a high-speed and high-precision spindle motor, which can solve the technical problem that the base for installing the account sleeve in the prior art is solidly designed, which makes the overall weight of the base larger, thereby making the installation of the tooling more difficult.

[0007] This application provides the following technical solutions:

[0008] A stator finishing tooling for a high-speed and high-precision spindle motor comprises an expansion sleeve, a base and a fastening assembly, wherein the expansion sleeve is mounted on the base with the fastening assembly; the base comprises a mounting plate and a tapered shaft seat, wherein the mounting plate is fixedly connected to the tapered shaft seat; the middle of the two axial end surfaces of the mounting plate are raised and a mounting hole is opened at the center, a plurality of connecting through holes are circumferentially arranged near the mounting hole, and a plurality of docking through holes are circumferentially arranged on the outside of the mounting hole near the edge of the mounting plate; a mounting hole corresponding to the mounting plate is also opened in the middle of one end of the tapered shaft seat, a docking threaded through hole is opened in the mounting hole of the tapered shaft seat, the tapered shaft seat comprises a parallel shaft section and a tapered shaft section, the radius of the parallel shaft section is smaller than the maximum radius of the tapered shaft section, and the radius of the parallel shaft section is larger than the minimum radius of the tapered shaft section, and a countersunk hole is opened in the docking threaded hole in the middle of the other end of the tapered shaft seat.

[0009] Beneficial effects:

[0010] This technology is simple to process and can reduce the weight of the base and improve installation efficiency.

[0011] First, the base includes a mounting plate and a tapered shaft seat, realizing a split design of the base. Compared with the integrated type, it is more convenient to process mounting holes on the mounting plate and the tapered shaft seat, with lower processing difficulty and higher precision, thus realizing a weight-reducing design.

[0012] Secondly, a docking threaded through hole is opened in the mounting hole of the tapered shaft seat, and a countersunk hole is opened in the docking threaded through hole. The docking threaded through hole and the countersunk hole can also be used to reduce weight, and fastening components can also be installed to effectively reduce the weight of the tapered shaft seat while ensuring installation stability.

[0013] Thirdly, the parallel shaft section of the tapered shaft seat can facilitate the expansion sleeve installed on the tapered shaft section to have a certain expansion space in the axial direction; in addition, the tapered shaft seat is arranged as a parallel shaft section and a tapered shaft section, and the parallel shaft end can reduce the overall weight of the tapered shaft seat; the radius of the parallel shaft section is smaller than the maximum radius of the tapered shaft section, and the radius of the parallel shaft section is larger than the minimum radius of the tapered shaft section. This arrangement can reduce the weight of the tapered shaft seat while ensuring the structural strength of the tapered shaft seat.

[0014] Finally, the middle part of both end faces of the mounting plate is convex. The middle part convexity of one end of the mounting plate can be used to match the mounting plate with the docking groove to achieve rapid positioning during installation. The middle part protrusion of the other end of the mounting plate can facilitate the docking of the mounting plate with the tapered shaft seat and then weld the two to achieve the overall structural strength of the base formed by the combination of the two. A plurality of connecting through holes are arranged circumferentially near the mounting hole, which can be used to fix the mounting plate with the tapered shaft seat before welding; a plurality of docking through holes are arranged circumferentially on the outside of the mounting hole near the edge of the mounting plate. The docking through holes can be used to fix the mounting plate with the flange at the end of the motor shaft. The motor shaft drives the base to rotate as a whole, so that the expansion sleeve fixed on the base and the stator fixed by the expansion sleeve can rotate. In addition, the docking through holes and the connecting through holes can also reduce the weight of the mounting plate.

[0015] Furthermore, the expansion sleeve is a cylindrical sleeve body, the interior of the sleeve body is conical, and a blocking cover with a central opening is provided at the end of the sleeve body at the end with a smaller radius.

[0016] Beneficial effect: The sleeve body is tapered to match the tapered shaft seat, and the end of the sleeve body at the end with a smaller radius is provided with a blocking cover with a central opening, and the blocking cover cooperates with the fastening component to lock and fix the expansion sleeve on the tapered shaft seat.

[0017] Furthermore, the fastening assembly includes a locking nut, a baffle, a hexagon socket screw, a retaining ring and a clamping ring. The locking nut is detachably connected to the tapered shaft seat. The baffle, retaining ring and clamping ring are all installed on the locking nut. The baffle is connected to the retaining ring with a hexagon socket screw.

[0018] Beneficial effects: The locking nut can use the baffle, the retaining ring and the clamping ring to clamp the baffle cover at the end of the expansion sleeve. When the locking nut is turned, the expansion sleeve is driven to make axial movement on the tapered shaft seat, and the locking nut can be used to lock and fix the expansion sleeve on the tapered shaft seat; the baffle and the retaining ring are connected with an internal hexagon screw, and the retaining ring arranged between the baffle and the retaining ring can be fixed.

[0019] Furthermore, an annular protrusion is provided in the middle of the locking nut, and an annular groove is provided on the locking nut on one side of the annular protrusion.

[0020] Beneficial effects: The annular protrusion and the annular groove can be used to install the fastening component, and the annular protrusion can play a blocking and positioning role, and the annular groove can also be used to install the clamping ring.

[0021] Furthermore, the expansion sleeve stop cover is clamped on the side of the annular protrusion close to the annular groove, the clamping ring is sleeved on the locking nut and clamped in the annular groove, and the baffle is arranged on the locking screw between the clamping ring and the expansion sleeve stop cover.

[0022] Beneficial effect: The expansion sleeve cover, baffle, clamping ring and retaining ring are arranged in sequence, and the clamping ring is arranged in the annular groove, which can ensure that when the locking nut is rotated forward or backward, the expansion sleeve can be effectively pushed to axially feed or withdraw on the tapered shaft seat.

[0023] Furthermore, the clamping ring is formed by splicing two semicircular rings.

[0024] Beneficial effect: Arranging the clamping ring into two semicircular rings can facilitate the installation of the clamping ring into the annular groove.

[0025] Furthermore, the clamping ring includes a circular ring body, and a plurality of sliding grooves are circumferentially arranged on the side wall of the inner ring of the circular ring body. A telescopic block is arranged in the sliding groove, and a spring is arranged at one end of the telescopic block. The spring is fixedly connected to the bottom of the sliding groove, and the telescopic block is slidably connected to the sliding groove.

[0026] Beneficial effect: By arranging the clamping ring in this way, the clamping ring can be directly sleeved on the locking nut and clamped into the annular groove by using the telescopic block, and due to the existence of the telescopic block, the clamping ring is easy to remove from the locking nut.

[0027] Furthermore, a circular ring is arranged between the outer side of the telescopic block and the side wall of the inner circle of the circular ring body.

[0028] Beneficial effect: the circular ring can fix the telescopic block of the clamping ring after the clamping ring is clamped into the annular groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The utility model is a schematic diagram of assembling the stator of the first embodiment of the stator finishing tooling of the high-speed and high-precision spindle motor.

[0030] Figure 2It is a front view of a first embodiment of a stator finishing tooling for a high-speed and high-precision spindle motor according to the utility model.

[0031] Figure 3 for Figure 2 Schematic diagram of the structure of the locking nut.

[0032] Figure 4 for Figure 2 Schematic diagram of the structure of the middle clamping ring.

[0033] Figure 5 The utility model is a schematic diagram of the installation of a clamping ring and a locking nut in a second embodiment of a stator finishing tooling for a high-speed and high-precision spindle motor.

[0034] Figure 6 for Figure 5 Cross-sectional view of the middle collar.

[0035] Figure 7 for Figure 5 Top view of the center collar. DETAILED DESCRIPTION

[0036] The following is further described in detail through specific implementation methods:

[0037] The marks in the drawings of the specification include: base 1, mounting plate 11, middle protrusion 111, mounting hole 112, connecting through hole 113, docking through hole 114, tapered shaft seat 12, docking threaded through hole 121, parallel shaft section 122, tapered shaft section 123, countersunk hole 1231, expansion sleeve 2, cover 21, fastening assembly 3, locking nut 31, annular protrusion 311, annular groove 312, baffle 32, hexagon socket screw 321, retaining ring 33, retaining ring 34, slide groove 341, telescopic block 342, spring 343, ring 344, stator 4.

[0038] Embodiment 1

[0039] like Figure 1 , Figure 2 As shown, a high-speed and high-precision spindle motor stator finishing tooling includes a base 1, an expansion sleeve 2, and a fastening assembly 3 for fixing the expansion sleeve 2 on the base 1, which are arranged from left to right in sequence; the expansion sleeve 2 is installed on the base 1 by the fastening assembly 3; the base 1 includes a mounting plate 11 and a tapered shaft seat 12, and the mounting plate 11 is fixedly connected to the tapered shaft seat 12;

[0040] The mounting plate 11 has protrusions 111 in the middle of both axial end surfaces and an axial mounting hole 112 is opened at the center of the mounting plate. A plurality of connecting through holes 113 penetrating the mounting plate 11 are circumferentially arranged around the mounting hole 112 of the mounting plate 11; a plurality of connecting holes 114 are also circumferentially arranged near the outer edge of the mounting plate 11.

[0041] A mounting hole 112 corresponding to the mounting plate 11 is also provided in the middle of one end of the tapered shaft seat 12. A butt-threaded through hole 121 is provided in the central axial direction of one end of the tapered shaft seat 12 away from the mounting plate 11. The mounting hole 112 in the center of the mounting plate 11 extends into the tapered shaft seat 12 and communicates with the butt-threaded through hole 121. The tapered shaft seat 12 includes a parallel shaft section 122 and a tapered shaft section. The radius of the parallel shaft section 122 is smaller than the maximum radius of the tapered shaft section 123, and the radius of the parallel shaft section 122 is larger than the minimum radius of the tapered shaft section 123. A countersunk hole 1231 is provided in the butt-threaded hole in the middle of the other end of the tapered shaft seat 12. In this embodiment, the mounting holes 112 provided on the mounting plate 11 and the tapered shaft seat 12 form a complete hole after the mounting plate 11 and the tapered shaft seat 12 are fixedly connected by screws through the connecting through hole 113.

[0042] The expansion sleeve 2 is a cylindrical sleeve body, which is conical inside, and a stopper 21 with a central opening is provided at the end of the sleeve body with a smaller radius. In this embodiment, the stopper 21 and the sleeve body are integrally formed, and the aperture of the central opening of the stopper 21 matches the fastening component 3 passing through.

[0043] like Figure 2 , Figure 3 As shown, the fastening assembly 3 includes a locking nut 31, a baffle 32, a hexagon socket screw 321, a snap ring 33 and a snap ring 34. The locking nut 31 is detachably connected to the tapered shaft seat 12. The baffle 32, the snap ring 33 and the snap ring 34 are all mounted on the locking nut 31. The baffle 32 and the snap ring 33 are connected by the hexagon socket screw 321. An annular protrusion 311 is provided in the middle of the locking nut 31. An annular groove 312 is provided on the locking nut 31 on one side of the annular protrusion 311. The width of the annular groove 312 is equal to the thickness of the snap ring 34. The stop cover 21 of the expansion sleeve 2 is clamped on the side of the annular protrusion 311 close to the inner side of the annular groove 312. The snap ring 34 is sleeved on the locking nut 31 and clamped in the annular groove 312. The baffle 32 is provided on the locking screw between the snap ring 34 and the stop cover 21 of the expansion sleeve 2.

[0044] like Figure 4 As shown, in this embodiment, the collar 34 is formed by splicing two semicircular rings 344 .

[0045] Here’s how to use it:

[0046] like Figure 1 As shown, the mounting plate 11 and the tapered shaft seat 12 are fixedly connected to form the base 1, and in order to improve the bonding strength between the two, the bonding point between the two can be welded and fixed.

[0047] After the base 1 is connected and fixed, Figure 2As shown, the mounting plate 11 is locked and fixed to the end flange of the rotating motor shaft by a screw through the docking through hole 114, and then the locking nut 31 is screwed into the docking threaded through hole 121, and the expansion sleeve 2 is inserted, so that the stop cover 21 of the expansion sleeve 2 is clamped on one side of the annular protrusion 311, and then the baffle 32, the clamping ring 33 and the clamping ring 34 are installed on the locking nut 31 in sequence. It is worth noting that since the clamping ring 33 is spliced ​​by two semicircular rings 344, the clamping ring 33 can directly clamp the two semicircular rings 344 in the annular groove 312 of the locking nut 31 and fix it with the baffle 32 and the clamping ring 34, and the baffle 32 and the clamping ring 34 are connected by the hexagon socket screw 321.

[0048] like Figure 1 As shown, the stator 4 is inserted into the expansion sleeve 2 , and then the lock nut 31 is further tightened so that the expansion sleeve 2 fixes the stator 4 .

[0049] In this embodiment, the mounting hole 112, the docking threaded hole and the countersunk hole 1231 can not only be used for connection, but also play a role in reducing the weight of the tooling itself.

[0050] Embodiment 2

[0051] like Figure 5 , Figure 6 , Figure 7 As shown, the difference between this embodiment and the first embodiment is that 1) the clamping ring 34 includes a ring 344 body, and a plurality of slide grooves 341 are circumferentially arranged on the side wall of the inner circle of the ring 344 body, and a telescopic block 342 is arranged in the slide groove 341. A spring 343 is fixed to one end of the telescopic block 342, and the spring 343 is fixedly connected to the bottom of the slide groove 341, and the telescopic block 342 is slidably connected to the slide groove 341. 2) A ring 344 is arranged between the outer side of the telescopic block 342 and the side wall of the inner circle of the ring 344 body.

[0052] The purpose of setting the clamping ring 34 in this way is to replace the clamping ring 34 designed with two semi-circular rings 344 in Example 1. Although the clamping ring 34 set by the semi-circular ring 344 has a simple structure, it is easy to fall off during installation due to the lack of a telescopic structure, which increases the difficulty of installation. The telescopic block 342 set in this embodiment can directly insert the clamping ring 34 into the annular groove 312 of the locking nut 31, and use the pre-tightening force of the spring 343 to make the telescopic block 342 press against the locking nut 31, and further use the circular ring 344 placed between the outer side of the telescopic block 342 and the side wall of the inner circle of the circular ring 344 body to clamp and fix the telescopic block 342, so that the entire clamping ring 34 is clamped and fixed.

[0053] The above is only an embodiment of the utility model. The utility model is not limited to the field involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A high-speed and high-precision spindle motor stator finishing tool, including an expansion sleeve, a base and a fastening component, characterized in that: The expansion sleeve is installed on the base with the fastening assembly; the base includes a mounting disk and a tapered shaft seat, and the mounting disk is fixedly connected to the tapered shaft seat; the middle part of the axial end surfaces of the mounting disk is raised and a mounting hole is opened at the center, and a plurality of connecting through holes are circumferentially arranged near the mounting hole, and a plurality of docking through holes are circumferentially arranged on the outside of the mounting hole near the edge of the mounting disk; a mounting hole corresponding to the mounting disk is also opened in the middle part of one end of the tapered shaft seat, and a docking threaded through hole is opened in the mounting hole of the tapered shaft seat, and the tapered shaft seat includes a parallel shaft section and a tapered shaft section, the radius of the parallel shaft section is smaller than the maximum radius of the tapered shaft section, and the radius of the parallel shaft section is larger than the minimum radius of the tapered shaft section, and a countersunk hole is opened in the docking threaded hole in the middle part of the other end of the tapered shaft seat.

2. The stator finishing tool for a high-speed and high-precision spindle motor according to claim 1 is characterized in that: The expansion sleeve is a cylindrical sleeve body, the interior of the sleeve body is conical, and a blocking cover with a central opening is provided at the end of the sleeve body at the end with a smaller radius.

3. The stator finishing tool for a high-speed and high-precision spindle motor according to claim 2 is characterized in that: The fastening assembly includes a locking nut, a baffle, a hexagon socket screw, a retaining ring and a clamping ring. The locking nut is detachably connected to the tapered shaft seat. The baffle, retaining ring and retaining ring are all installed on the locking nut. The baffle is connected to the retaining ring with a hexagon socket screw.

4. The stator finishing tool for a high-speed and high-precision spindle motor according to claim 3 is characterized in that: An annular protrusion is arranged in the middle of the locking nut, and an annular groove is opened on the locking nut on one side of the annular protrusion.

5. The stator finishing tool for a high-speed and high-precision spindle motor according to claim 4, characterized in that: The expansion sleeve stop cover is clamped on the side of the annular protrusion close to the annular groove, the clamping ring is sleeved on the locking nut and clamped in the annular groove, and the baffle is arranged on the locking screw between the clamping ring and the expansion sleeve stop cover.

6. The stator finishing tool for a high-speed and high-precision spindle motor according to claim 5, characterized in that: The clamping ring is formed by splicing two semicircular rings.

7. The stator finishing tool for a high-speed and high-precision spindle motor according to claim 5, characterized in that: The clamping ring includes a circular ring body, a plurality of sliding grooves are circumferentially arranged on the side wall of the inner ring of the circular ring body, a telescopic block is arranged in the sliding groove, a spring is arranged at one end of the telescopic block, the spring is fixedly connected to the bottom of the sliding groove, and the telescopic block is slidably connected to the sliding groove.

8. The stator finishing tool for a high-speed and high-precision spindle motor according to claim 7, characterized in that: A circular ring is arranged between the outer side of the telescopic block and the side wall of the inner circle of the circular ring body.

Images